Do you guys also think that Lightroom 4 handles the 1d X files much better than the 5d3 files, or is the files just that much better?

I don't own a 5d III but I have a Mk II and with the new version I can recover way more information than before. Something important is that you no longer have strange skin tones when adjusting highlights and shadows (unless you go waaaaaay too far with it)